Vehicle-wheel.



W'. is, MGFDDEN.

VBH'XGLE WHEEL.

APPLICATION' FILED SEPT.15, 1910.

ernten MCFADDEN, OF SYRACUSE NEW' YORK.

VEHICLE-W'HEEL.

il ,tl-56,

:ipeccatton of Letters Patent.

Application filed September l5, 1910.

Patented Mar. It, i913.

Serial No. 582,206.

1 o lt/Z yill/ioni.. it more concern.'

lle it ltlioivn that l,n lViLLiAM B. MeFAir linx., ot S \i'aclise, in llie count-y ot Oi'iondaga, in the fatale ot New York, have invented new. and llsetul liiipi'oveinents in `Vehiclell'hneis. et which the following, taken in connection vvitli the ali'conipaiiying drawings, is a 't'ullg clear, and exact description.

"l'his invention relates to certain improvements in vehicle Wheels tor autoiiiobiles and other carriages in which a certain degree of resiliency required between the tr lad and hub ol? the ivhecl to relieve the running gear from c vce ve shock or vibration.

lt u'ell ltnovvn that in the action of the usual piieiliiiatitI tire comprising an inner iiitlatable tlilie and outer shoe or casing, the continued flexing action ot opposite sides ot the tire between the ltread and riiii soon causes molecular disintegration and consequent weakening ot' these portions of the shoe or casing' to such an extent as to be incapable oi resisting air pressure from within and resulting in frequent blovfouts oi' bursting ot' the tire ivliile the tread portion may be still intact. ln addition to this, these pneumatic tires are alivaj/S exposed to excessive injury by ivcar and puncture so that their use becomes one ot the most expensive and trolililesonie items in the tip-keep of the niacnine.-

The main object of my invention is to provide a commercially practicable vehicle v-:hccl ivith pneumatic resilience disposed in liability to puncture and atetlie same time haring` all of the advantaffes ,of resiliency and flexibility ot the usual pneumatic tire.

,\nother objecty is to permit the `use ot single tube intlatable piieuniaties ot' considerahly `smaller cross sectional diameter than the usual shoe and to arrange such pncumatics at opposite sides ol the longitudinal center oit' the tire proper so as to afford a broader pneumatic bearing' laterally and reduce the liability lo disintegration by con: tiiillell llexinc action.

Other obje s and uses relating' to the specilii: parts ot the wheel will be brought out in the Vfollowing description.

ln the drawii 5, Figure -lis a 'side elevation. partly hrolreii away of a. vehicle wheel eiiibullf; l the. various tentures ot' my invention. lfif4 12- is a transverse seetional view ot the same Wheel taken on line Fig. -3- is an enlai'ged sectional view of portionsl of the Webs ot' the rimsl between which the pneumatic tubes are located showing particularly the means for clamping the spokes to the web of the inner rini,

In cariying ollt the. object stated, a pair of annular pneumatic tubes -lof substantially the same size and form are interposed Side by side between inner and outer annular rims -2-- and --3 which are movable radially relatively to each other but are normally held in concentric relation by the inflation ot the tubes -l-. These rims -Q- and -3- are of Substantially the same Width, sutlicieiit lo receive and retain the tubes --l side by side and are preferably provided with central inwardly projecting' annular flanges or Webs flmand -5- and opposite laterally projecting conavo-convex flanges tlland *Y* having their concave Sides facing each other to form tor receiving and retaining the tubes 1- in operative position7 leaving sutlicient; intervening space between the laterally projecting flanges tor the relative radial movement ot the rims under flexing action of the pneumatic tubes. These rims are preterably iliade ot rolled steel or other suitable ii'iaterial, the web elbeing` provided with an annular slot or `groove 8w while the web 5H preferably consists of a single thickness ot ii'ietal and projects inwardly into the annular groove Si thereby torming radially sliding interlocking connections between the rims and preferably midway between the tubes -lto permit relative radial movement of said rims and at the same time prevent their relative lateral movement.

T he central portion of the ol'lteigrim -3 between the lateral flanges -7- is depressed to forni an annular groove inpvliich is seated a tire tl of-solid rubber or any other suitable material. lVhen the tire -9- "is iliade of solid' rubber which is preferable, it may be continuous and held in place by'its entrance into the annular recess or .groove in the center of the outer rim Z or may be additionally retained by means of a eircular wire -l0- passed therethrough and arollnd the periphery ofthe groove in which the tire is seated in a manner similar to that by which solid tires are attached to ordinary wagon wheels.

rl`he web of the inner rim -2- may be connected to any suitable construe 

